[英]How to delete object in realm in Swift
我檢查了許多其他答案,但仍然有刪除領域數據庫的問題。 這是我的錯誤代碼:
因未捕獲的異常'NSInvalidArgumentException'而終止應用程序,原因:' - [Rebel.RebelTableViewController delete:]:無法識別的選擇器發送到實例0x7fca7b40b5c0
這段代碼是從我的表視圖中刪除的:
if editingStyle == UITableViewCellEditingStyle.delete {
rowHere = indexPath.row
// it crashes the app when I want to delete from database
// delete(self.todos[self.rowHere!])
self.Rebel.remove(at: indexPath.row)
tableView.deleteRows(at: [indexPath as IndexPath], with: UITableViewRowAnimation.automatic)
}
首先在viewDidLoad()
獲取Object
模型
var DatabaseModel: Results<ObjectClassRealm>!
override func viewDidLoad() {
super.viewDidLoad()
let realm = RealmService.shared.realm
DatabaseModel = realm.objects(ObjectClassRealm.self)
}
func tableView(_ tableView: UITableView, commit editingStyle: UITableViewCellEditingStyle, forRowAt indexPath: IndexPath) {
guard editingStyle == .delete else { return }
let objectData = DatabaseModel[indexPath.row]
RealmService.shared.delete(objectData)
}
或者你可以點擊按鈕刪除
@IBAction func DeleteData(_ sender: Any) {
let realm = try! Realm()
let deleteData = realm.object(ofType: ObjectClassRealm.self,
forPrimaryKey: PRIMARYKEY)
if deleteData == nil {
print("No data in DB")
} else {
RealmService.shared.delete(deleteData!)
}
}
閱讀領域文件,你也會發現很多相同問題的解決方案。
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